From: Mladen Gogala <mladen.gogala@vmsinfo.com>
To: sthomas@peak6.com <sthomas@peak6.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: David Greco <David_Greco@harte-hanks.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Real vs Int performance
Date: Thu, 27 Jan 2011 10:11:12 -0500
Message-ID: <4D418B10.7050008@vmsinfo.com> (raw)
In-Reply-To: <4D418177.1040401@peak6.com>
References: <CDFA9340E95A764E9366B4EDF3A43125BCACF7E68D@VA3DIAXVS091.RED001.local>
<26917.1296079932@sss.pgh.pa.us>
<CDFA9340E95A764E9366B4EDF3A43125BCACF7E9EC@VA3DIAXVS091.RED001.local>
<21353.1296137891@sss.pgh.pa.us>
<4D418177.1040401@peak6.com>
On 1/27/2011 9:30 AM, Shaun Thomas wrote:
> I'm not sure about orders of magnitude on the storage/index side, but my
> tests gave us a 10% boost if just the keys are switched over to INT or
> BIGINT.
Well, it depends on what you're doing. Searching by an integer vs.
searching by a text string will probably not make much of a difference.
However, if you are calculating sums or averages, there will be a huge
difference.
--
Mladen Gogala
Sr. Oracle DBA
1500 Broadway
New York, NY 10036
(212) 329-5251
www.vmsinfo.com
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To: pgsql-performance@postgresql.org
Cc: mladen.gogala@vmsinfo.com, sthomas@peak6.com, tgl@sss.pgh.pa.us, David_Greco@harte-hanks.com
Subject: Re: Real vs Int performance
In-Reply-To: <4D418B10.7050008@vmsinfo.com>
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